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Finding the Fourth Proportional to 326,656.99, 490,112.25 and 127,117.54

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Solution

The fourth proportional to 326,656.99, 490,112.25 and 127,117.54 is: 190,725.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,656.99 : 490,112.25 = 127,117.54 : x
  2. Step 2: Convert to fraction form
    326,656.99/490,112.25 = 127,117.54/x
  3. Step 3: Cross multiply
    326,656.99x = 490,112.25 × 127,117.54
  4. Step 4: Simplify right side
    326,656.99x = 62,301,863,543.87
  5. Step 5: Solve for x
    x = 62,301,863,543.87/326,656.99
  6. Step 6: Final answer
    x = 190,725.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.